Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.21.2
Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Commitments to Purchase Loans [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Amount $ 12.3 $ 10.2
Commitments to Sell Loans [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Amount $ 163.9 54.3
Equal To Or Greater Than [Member]    
Commitments and Contingencies [Line Items]    
Percentage of outstanding principal balance is equal to or greater than MCA. 98.00%  
Percentage of outstanding principal balance of HECM is equal to or greater than MCA. 98.00%  
HECM Loans [Member]    
Commitments and Contingencies [Line Items]    
Unfunded loan commitments $ 2,400.0 2.1
Fix And Flip Loans [Member]    
Commitments and Contingencies [Line Items]    
Unfunded loan commitments $ 10.7 $ 18.8